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单词
Owl Nebula
释义
Owl Nebula
Encyclopedia
理学
行星状星云
释
Owl Nebula
夜枭星云
位于大熊星座的一个比较复杂的行星状星云。星表中的编号为M97和NGC3587。距离地球2030光年(621秒差距),视星等为9.9,年龄约8千年。又称猫头鹰星云。
Astronomy
Owl Nebula
夜枭星云
随便看
open-air telescope
open air theater
open airway
open-and-closed set
open-and-closed subset
open and cut method
open arc
open arc crater
open architecture framework
open architecture framework, OAF
Open Archival Information System
open archival shelves
open archives initiative protocol for metadata harvesting
open area-test site
open ball
open base
open bibliographic data
open bite
open boundary condition
Open Brethren
open caisson foundation
open calibration field
open canal
open card sorting
opencast mining plan
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更新时间:2026/11/6 17:06:37